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在生态系统中物质是循环的．生产者能把二氧化碳和水这些无机物制造成有机物下列 能把有机物再转变成二氧化碳和水等返回无机环境中．a．生产者 Template






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sketch 5176
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sketch 4869 Madara by Jean-Benoit Renaud
sketch 1853 scribble
sketch 3516
sketch 2939 Eye by Kimmy Kitty Perry Priemus
sketch 5178 Mewtwo and Transformation by Riley Hart
sketch 3581 Dante

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sketch 5216 D by Gabriela Segura
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sketch 5172 Cheshire Cat by Juan Garcia
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tomski在生态系统中物质是循环的．生产者能把二氧化碳和水这些无机物制造成有机物下列 能把有机物再转变成二氧化碳和水等返回无机环境中．a．生产者 coloring
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生态系统循环 千图 sketch template
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下图为生态系统碳循环示意图其中甲乙丙表示生态系统中的三种成分 1生态系统的碳循环是指碳元素在 与 之间不断循环的过程 2X与 sketch template
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如图甲图乙分别表示稻鱼蛙共生农业生态系统和普通稻田生态系统的物质循环能量转化示意图．据图分析回答下面的问题． 1分析说明鱼和蛙在该生态 sketch template
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在生态系统的碳 氧循环中能使二氧化碳进入生物体中又能将其释放到大气中的生物是A．分解者B．植食动物C．绿色植物D．肉食动物 题目和参考 sketch template
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16．下图是某生态系统中能量与物质流动关系示意图看图作答图中 为有毒物质浓度百万分之一即10 6能量单位kJ/cm2/年 1 sketch template
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如图表示生态系统中碳循环和氮循环的一部分甲乙 丙三类微生物参与其中下列说法正确的是 Ww^wk&amps5 A丙类微生物 sketch template